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Finding the Fourth Proportional to 978,476.76, 1,467,700.56 and 339,246.36

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Solution

The fourth proportional to 978,476.76, 1,467,700.56 and 339,246.36 is: 508,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,476.76 : 1,467,700.56 = 339,246.36 : x
  2. Step 2: Convert to fraction form
    978,476.76/1,467,700.56 = 339,246.36/x
  3. Step 3: Cross multiply
    978,476.76x = 1,467,700.56 × 339,246.36
  4. Step 4: Simplify right side
    978,476.76x = 497,912,072,549.96
  5. Step 5: Solve for x
    x = 497,912,072,549.96/978,476.76
  6. Step 6: Final answer
    x = 508,864.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.